Title:
HAND ACTUATOR AND HAND
Document Type and Number:
Japanese Patent JPH1190877
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent the occurrence of bubbles by reducing the pressure difference between the right and left chambers divided by one and the other pistons of one and the other cylinders. SOLUTION: A pipe 9 communicates one chamber 42 faced to the other chamber 41 of a shaft drive section cylinder 4 fed with an operating fluid from one chamber 81 of the drive section cylinder 8 with the other chamber 82 of the drive section cylinder 8, thus the pressures of both chambers 42, 82 of the shaft drive section and drive section cylinders 4, 8 are equalized in response to the reciprocation of a shaft drive piston 12 and a drive piston 83. The pressure difference between the right and left chambers is reduced, the occurrence of bubbles caused by the air mingled in the operating fluid is prevented, and an adverse effect on power transmission caused by the compression and expansion of bubbles is prevented.
Inventors:
MAEDA KOJI
IINUMA KAZUHISA
IINUMA KAZUHISA
Application Number:
JP27048197A
Publication Date:
April 06, 1999
Filing Date:
September 16, 1997
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
B25J19/00; B25J15/08; F15B7/08; (IPC1-7): B25J15/08; B25J19/00; F15B7/08
Attorney, Agent or Firm:
High Katsuhiko Hashi
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